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<div class="content guard">
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<ol class="breadcrumb">
<li>Guards</li>
<li>RoleGuard</li>
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<a href="#info" role="tab" id="info-tab" data-toggle="tab" data-link="info">Info</a>
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<p class="comment">
<h3>File</h3>
</p>
<p class="comment">
<code>src/app/_guards/role.guard.ts</code>
</p>
<p class="comment">
<h3>Description</h3>
</p>
<p class="comment">
<p>Role guard implementation.
Dictates access to routes depending on the user's role.</p>
</p>
<section>
<h3 id="index">Index</h3>
<table class="table table-sm table-bordered index-table">
<tbody>
<tr>
<td class="col-md-4">
<h6><b>Methods</b></h6>
</td>
</tr>
<tr>
<td class="col-md-4">
<ul class="index-list">
<li>
<a href="#canActivate">canActivate</a>
</li>
</ul>
</td>
</tr>
</tbody>
</table>
</section>
<section>
<h3 id="constructor">Constructor</h3>
<table class="table table-sm table-bordered">
<tbody>
<tr>
<td class="col-md-4">
<code>constructor(router: <a href="https://angular.io/api/router/Router" target="_blank">Router</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="21" class="link-to-prism">src/app/_guards/role.guard.ts:21</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description"><p>Instantiates the role guard class.</p>
</div>
<div>
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
<td>Description</td>
</tr>
</thead>
<tbody>
<tr>
<td>router</td>
<td>
<code><a href="https://angular.io/api/router/Router" target="_blank" >Router</a></code>
</td>
<td>
No
</td>
<td>
<code><ul>
<li>A service that provides navigation among views and URL manipulation capabilities.</li>
</ul>
</code>
</td>
</tr>
</tbody>
</table>
</div>
</td>
</tr>
</tbody>
</table>
</section>
<section>
<h3 id="methods">
Methods
</h3>
<table class="table table-sm table-bordered">
<tbody>
<tr>
<td class="col-md-4">
<a name="canActivate"></a>
<span class="name">
<b>
canActivate
</b>
<a href="#canActivate"><span class="icon ion-ios-link"></span></a>
</span>
</td>
</tr>
<tr>
<td class="col-md-4">
<code>canActivate(route: <a href="https://angular.io/api/router/ActivatedRouteSnapshot" target="_blank">ActivatedRouteSnapshot</a>, state: <a href="https://angular.io/api/router/RouterStateSnapshot" target="_blank">RouterStateSnapshot</a>)</code>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-line">Defined in <a href="" data-line="38"
class="link-to-prism">src/app/_guards/role.guard.ts:38</a></div>
</td>
</tr>
<tr>
<td class="col-md-4">
<div class="io-description"><p>Returns whether navigation to a specific route is acceptable.
Checks if the user has the required role to access the route.</p>
</div>
<div class="io-description">
<b>Parameters :</b>
<table class="params">
<thead>
<tr>
<td>Name</td>
<td>Type</td>
<td>Optional</td>
<td>Description</td>
</tr>
</thead>
<tbody>
<tr>
<td>route</td>
<td>
<code><a href="https://angular.io/api/router/ActivatedRouteSnapshot" target="_blank" >ActivatedRouteSnapshot</a></code>
</td>
<td>
No
</td>
<td>
<ul>
<li>Contains the information about a route associated with a component loaded in an outlet at a particular moment in time.
ActivatedRouteSnapshot can also be used to traverse the router state tree.</li>
</ul>
</td>
</tr>
<tr>
<td>state</td>
<td>
<code><a href="https://angular.io/api/router/RouterStateSnapshot" target="_blank" >RouterStateSnapshot</a></code>
</td>
<td>
No
</td>
<td>
<ul>
<li>Represents the state of the router at a moment in time.</li>
</ul>
</td>
</tr>
</tbody>
</table>
</div>
<div>
</div>
<div class="io-description">
<b>Returns : </b> <code>Observable | Promise | boolean | UrlTree</code>
</div>
<div class="io-description">
<p>true - If the user's role matches with accepted roles.</p>
</div>
</td>
</tr>
</tbody>
</table>
</section>
</div>
<div class="tab-pane fade tab-source-code" id="c-source">
<pre class="line-numbers compodoc-sourcecode"><code class="language-typescript">import { Injectable } from '@angular/core';
import {
ActivatedRouteSnapshot,
CanActivate,
Router,
RouterStateSnapshot,
UrlTree,
} from '@angular/router';
// Third party imports
import { Observable } from 'rxjs';
/**
* Role guard implementation.
* Dictates access to routes depending on the user's role.
*/
@Injectable({
providedIn: 'root',
})
export class RoleGuard implements CanActivate {
/**
* Instantiates the role guard class.
*
* @param router - A service that provides navigation among views and URL manipulation capabilities.
*/
constructor(private router: Router) {}
/**
* Returns whether navigation to a specific route is acceptable.
* Checks if the user has the required role to access the route.
*
* @param route - Contains the information about a route associated with a component loaded in an outlet at a particular moment in time.
* ActivatedRouteSnapshot can also be used to traverse the router state tree.
* @param state - Represents the state of the router at a moment in time.
* @returns true - If the user's role matches with accepted roles.
*/
canActivate(
route: ActivatedRouteSnapshot,
state: RouterStateSnapshot
): Observable<boolean | UrlTree> | Promise<boolean | UrlTree> | boolean | UrlTree {
const currentUser = JSON.parse(localStorage.getItem(atob('CICADA_USER')));
if (currentUser) {
if (route.data.roles && route.data.roles.indexOf(currentUser.role) === -1) {
this.router.navigate(['/']);
return false;
}
return true;
}
this.router.navigate(['/auth'], { queryParams: { returnUrl: state.url } });
return false;
}
}
</code></pre>
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